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jess p jess p is offline
Join Date: Jun 2002
Posts: 687

On G50 and 930 longbell housing cars porsche redesigned the torsion
tube to accomodate these slightly longer transaxles. One option was
to replace the torsion tube with the appropriate tube designated for
the particular transaxle. The other option was to shorten the tranny.
I'm told that to shorten the tranny the mainshaft needs to be shortened
as well. This job certainly needs to be done by a really competent machine
shop as I've heard of cases where the job was botched. I've also heard
that the tranny needs to be disassembled for the job as well. To me it
would be cheaper to replace the torsion tube with the appropriate tube
than to modify the tranny. I've replaced a torsion tube myself in an
afternoon. I paid $75.00 for a tube and did the welding myself. Another
option is to simply modify the engine mounts as the engine would be moved
1.5 inches closer to the rear.
Old 08-11-2007, 10:15 AM
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